West Duwamish Wet Weather Storage

Agency:	King County
State:	Washington
Type of Government:	State & Local
Posted Date:	Sep 16, 2025
Due Date:	Sep 30, 2025
Solicitation No:	KC001462
Original Source:	Please Login to View Page
Contact information:	Please Login to View Page
Bid Documents:	Please Login to View Page

Abstract: Construction Solicitation KC001462,4

Title

Solicitation Type

Construction Solicitation

Status

Active

Buyer

Julie Thiele

juthiele@kingcounty.gov

Synopsis

Construct West Duwamish Combined Sewer Overflow (CSO) Control Facility and West Duwamish Interceptor Diversion Structure, modify existing Terminal 115 Overflow Structure and make improvements to existing mechanical, electrical, and instrumentation and control (I&C) systems to existing West Michigan Street Regulator Station.

Addendum Description

Addendum 4 has been issued. Suppliers must acknowledge all addenda before submitting a response. If a supplier has already submitted a response, they MUST log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit.

Attachments

KC001462-addendum-4.pdf (2.01 MB)

KC001462-addendum-2.pdf (3.87 MB)

KC001462-itb-vol-7.pdf (99.42 MB)

KC001462-itb-vol-3-6.zip (144.58 MB)

KC001462-bidding-schedule.xlsx (24.38 KB)

KC001462-itb-vol-1&2.zip (47.93 MB)

KC001462-addendum-1.pdf (1.04 MB)

KC001462-bidding-schedule-ad-1.xlsx (24.24 KB)

REF DOCS 1-21.zip (87.2 MB)

REF - 22. Volume 6 of 7 Contract Drawings (Unprotected PDF).pdf (108.28 MB)

REF - 23. Volume 7 of 7 Contract Drawings (Unprotected PDF).pdf (99.63 MB)

KC001462-addendum-3.zip (2.56 MB)


Open Date	9/16/25 03:45:26 PM
Close Date	9/30/25 01:30:59 PM
Posting Date	9/16/25

Additional Information


KC Solicitation NAICS Code(s)	237110;238110;238120;237990
Small Business Requirements Apply?	Yes


Department	NATURAL RESOURCES AND PARKS
Division	WASTEWATER TREATMENT

O K

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West Duwamish Wet Weather Storage

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